Fixed listing of the existing directory in Ftpd

[SilverFire]

Follows the parent class fix 5901bb5
Before the change, calling getMetadata() over an existing directory produced a fatal error.

PHP Fatal error:  Uncaught RuntimeException: Metadata can't be parsed from item 'total 334920' , not enough parts. in /app/vendor/league/flysystem/src/Adapter/AbstractFtpAdapter.php:435

Ftpd produces the following output on STAT call over directory:

array(46) {
  [0]=>
  string(32) "212- Status of content10/export:"
  [1]=>
  string(12) "total 334920"
  [2]=>
  string(72) "-rw-r--r--  1 1000  1000   3645884 Jul 18 06:10 movie.ts"
  
  [....]

  [45]=>
  string(18) "212 End of status."
}

Then, it can not be parsed by normalizeObject

[SilverFire]

Ok, I see the tests fail. Will check details later

[SilverFire]

Fixed tests, ready for review